Angular dependence of the perpendicular giant magnetoresistance of multilayers

Dauguet, P.; Gandit, P.; Chaussy, J.; Lee, S.F.; Fert, A.; Holody, P.

doi:10.1103/physrevb.54.1083

Cited by 42 publications

(37 citation statements)

References 20 publications

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“…[14][15][16] When the ferromagnetic layer thickness d F ӷ c the spin-transfer torque is a pure interface property governed by the so-called spinmixing conductance, 17 which is accessible to first-principles calculations. 18 An excellent method to measure the torque and mixing conductance is the normalized angular magnetoresistance ͑aMR͒ of perpendicular F ͉ N ͉ F spin valves [19][20][21] …”

Section: Introductionmentioning

confidence: 99%

Perpendicular spin valves with ultrathin ferromagnetic layers: Magnetoelectronic circuit investigation of finite-size effects

2006

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We address two finite-size effects in perpendicular transport through multilayers of ferromagnetic and normal metal layers: ͑i͒ the transport properties depend on the magnetic layer thickness when of the order or thinner than the spin-flip diffusion length and ͑ii͒ magnetic layers with thickness approaching the magnetic coherence length become transparent for spin currents polarized perpendicular to the magnetization. We use magnetoelectronic circuit theory to investigate both effects on angular magnetoresistance ͑aMR͒ and spintransfer torque in perpendicular spin valves. We analyze recent aMR experiments to determine the spin-flip diffusion length in the ferromagnet permalloy as well as the Py͉Co interface spin-mixing conductance and propose a method to measure the ferromagnetic coherence length.

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Section: Introductionmentioning

confidence: 99%

Perpendicular spin valves with ultrathin ferromagnetic layers: Magnetoelectronic circuit investigation of finite-size effects

2006

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“…12,21,22 The present study has been motivated by Pratt's observation that experimental magnetoresistance curves 12 could accurately be fitted by the form 6…”

Section: Fig 1 Different Realizations Of Perpendicular Spin Valvesmentioning

confidence: 99%

Universal angular magnetoresistance and spin torque in ferromagnetic/normal metal hybrids

et al. 2003

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The electrical resistance of ferromagnetic/normal-metal (F/N) heterostructures depends on the nature of the junctions that may be tunnel barriers, point contacts, or intermetallic interfaces. For all junction types, the resistance of disordered F/N/F perpendicular spin valves as a function of the angle between magnetization vectors is shown to obey a simple universal law. The spin-current induced magnetization torque can be measured by the angular magnetoresistance of these spin valves. The results are generalized to arbitrary magnetoelectronic circuits.

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“…[2]) discussed the general case with both spin-dependent scattering and potential barriers between successive layers for a spin valve structure, and showed that when the spin-dependent lattice potential is included, the resistivity is no longer a linear function of cos ϕ. For current in the plane of the layers (CIP), experiments have found for the most part, the simple cos ϕ behavior [3]; however for current perpendicular to the plane of the layers (CPP), significant deviations have been established [4]. What is lacking up till now is a calculation of the orientational dependence of GMR that at the same time is based on realistic band structures and is able to account for spin-dependent scattering.…”

Section: Introductionmentioning

confidence: 99%

On the orientational dependence of giant magnetoresistance

et al. 1999

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Abstract. The functional dependence of the giant magnetoresistance (GMR) with respect to the relative angle between the orientations of the magnetization in the magnetic slabs of a trilayer system is calculated by using the Kubo-Greenwood formula for electrical transport together with the fully-relativistic spinpolarized screened Korringa-Kohn-Rostoker method for semi-infinite systems and the coherent potential approximation. It is found that the functional dependence of the GMR is essentially of the form (1−cos ϕ). PACS

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Angular dependence of the perpendicular giant magnetoresistance of multilayers

Cited by 42 publications

References 20 publications

Perpendicular spin valves with ultrathin ferromagnetic layers: Magnetoelectronic circuit investigation of finite-size effects

Perpendicular spin valves with ultrathin ferromagnetic layers: Magnetoelectronic circuit investigation of finite-size effects

Universal angular magnetoresistance and spin torque in ferromagnetic/normal metal hybrids

On the orientational dependence of giant magnetoresistance

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